Charging base station



FIG. 1 is a perspective view of the charging base station;

FIG. 2 is a front view of the charging base station;

FIG. 3 is a top view of the charging base station;

FIG. 4 is a rear view of the charging base station;

FIG. 5 is a bottom view of the charging base station;

FIG. 6 is a left side of the charging base station; and,

FIG. 7 is a right side view of the charging base station.

The broken lines shown in the drawings are included for the purpose of illustrating portions of the charging base station that form no part of the claimed design. 

CLAIM The ornamental design for a charging base station, as shown and described. 